Donald Trump is not the only politician targeted by the blossoming progressive resistance movement in the United States. Establishment Democrats are now openly worried about being held accountable by left-wing activists when they cozy up to industry or aren’t steadfast in their opposition to Trump. The fact that nervous senior Democrats felt compelled to ask Bernie Sanders to “urge activists to redirect their anger at Republicans instead of at moderate Democratic lawmakers,” as The Washington Post reported, is evidence that the strategy is working.